package cn.ryh.interceptor.config;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @ClassName MyInterceptorTwo
 * @Description 自定义拦截器二
 * @Author RaoYH
 */
public class MyInterceptorTwo implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {

        System.out.println(">>>MyInterceptorTwo>>>>>>>preHandle在请求处理之前进行调用（Controller方法调用之前）");
        // 只有返回true才会继续向下执行，返回false取消当前请求
        return true;
    }


    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
                           ModelAndView modelAndView) throws Exception {
       throw new Exception();
//         System.out.println(">>>MyInterceptorTwo>>>>>>>postHandle请求处理之后进行调用，但是在视图被渲染之前（Controller方法调用之后）");

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
            throws Exception {

        System.out.println(">>>MyInterceptorTwo>>>>>>>afterCompletion在整个请求结束之后被调用，" +
                "也就是在DispatcherServlet 渲染了对应的视图之后执行（主要是用于进行资源清理工作）");

    }
}
